Process for protection of keratine material



United States Patent 3,178,339 PRSCESS FGR PRQTEGHQN 0F KERATINE MATERHAL Wilhelm Ernst Frick, Easel-Land, and Walter fitammhach, Basel, Switzeriand, assignors to .l. R. Geigy A.-G., Basel, Switzerland No Drawing. Filed Mar. 7,1962, Ser. No. 177,975 Claims priority, application Switzerland, Dec. 24, 1957,

13 Claims. (Cl. 167-37) The present invention relates to the use of new com pounds for combatting injurious insects, especially those eating keratine materials. In particular, it relates to processes for the protection of keratiue material from injurious insects with new derivatives of the aminobenzoic acids and more particularly with derivatives of N-sulphonated aminobenzoic acid arylamides. The invention can be broken up into two aspects.

According to the first aspect of the invention, it relates to a process for the protection of keratine material from injurious insects with new compounds of the structural formula wherein R is a lower alkyl radical,

R represents a member selected from the group consisting of hydrogen and lower alkyl radicals,

X independently in each occurrence represents a member selected from the group consisting of chlorine, bromine and trifluoromethyl,

m is an integer from 1 to 4,

Y represents a member selected from the group consisting of hydrogen, methyl, lower alkoxy, chlorinated phenoXy and chlorinated phenylmercapto radicals,

Hal represents an atom selected from the group consisting of chlorine and bromine,

n is an integer from 1 to 3, and the total sum of m-l-n is is at least 3 and at most 7.

Said new compounds have an excellent insecticidal activity in particular against insects in all stages of their evelopment which injure lceratine material such as moth larvae and larvae of furniture carpet beetle (Anthrenus vorax) and black carpet beetle (Atz'agenus piceus).

Preferred compounds of the above Formula I are those in which Hal is chlorine. In formula, X is also advantageously chlorine but when more than one X is present, possibly at least one of them can be the trifiuoromethyl group. The action of the trifiuoromethyl radical is equivalent to that of a halogen atom so that the one can be exchanged for the other. If the molecule contains a trifiuoromethyl radical as substituent X, advantag'eously other radicals X are chlorine or bromine. Very active compounds are those in which the radical Y is a hydrogen atom, but the radical Y can also advantageously be a methyl or lower alkoxy group such as methoxy and ethoxy.

The radical R is advantageously a methyl group, but it can also be other lower alkyl radicals such as ethyl, propyl and butyl. If the radical R is not hydrogen, then it can be represented by lower alkyl radicals suchas methyl, ethyl, isopropyl and butyl. The total sum of m+n must be more than 2 and, advantageously, should be at least 4.

"ice

by the processes described in our copending application Ser. No. 177,976 filed on even date.

As merely illustrative of compounds of Formula I useful in this first aspect there are thefollowing (all melting points are given in degrees centigrade):

Z-methane sulphonamido-S-chlorobenzoic, acid-2',3',4? ,5

tetrachloranilide, M.P. 240-242", Z-methane sulphonemet'hylamido-3,S-dichlorobenzoic acid-3',4-dichloranilide, M.P. 204-205",

Z-methane sulphonamido-3,5-dichlorobenzoic acid- 3,4',5'-trichloranilide, M.P. 297-298",

Z-methan'e sulphonamido-S-chlorobenzoic acid-3,4'-

dichloranilide, MP. 201-203",

Z-methane sulphonemethylamidol,S-dichlorobenzoic acid-3,4-dichloranilide, M.P. 185-186.",

Z-methane sulphonamido-3,S-dichlorobenzoic' acid- 3',4'-dichloranilide, MP. 248-249",

Z-methane sulphonamido-5-chlorobenzoic acid-3'- chloro-4-bromanilide, MI. 211-213",

Z-methane sulphonamido-5-chlorobenzoic acid-r 3,4',5-trichloranilide, M.P. 240-242", Z-methane sulphonamido-S-chlorobenzoic. acid-2,4-

dichloro-5'-trifluoromethyl anilide, M.P. 195-198", 2-methane sulphonamido-5-chlorobenzoic acid-2','4't,5-

trichloranilide, M.P. 198-200",

Z-methane sulphonamido-4-chlorobenzoic acid-3,4'-

dichloranilide, M.P. 255-257",

Z-methane sulphonamido-3,S-dichlorobenzoic acid-2'- methoxy-3,4,5'-trichloranilide M.P. 240-241",

Z-methane sulphonamido-3,S-dichlorobenzoic acid- 2,3,4,5'-tetrachloranilide, M.P. 280-282",

Z-methane sulphonamido-3,S-dichlorobenzoic acid-4'- chloranilide, MP. 270-271",v

Z-methane sulphonamido-3,S-dichlorobenzoic acid-3- chloro-4'-bromanilide, MP. 268-2695",

Z-methane sulphonamido-3,S-dichlorobenzoic acid 2',4',5-trichloranilide, M.P. 274-275 Z-methane sulphonamido-3,S-dichlorbbenzoic acid-3'- trifiuoromethyl-4'-chl0ranilide, M.P. 237-238",

Z-methane sulphonamido-3,S-dichlorobenzoic acid-2-I (4"-chlorophenoxy)-5'-chloranilide, lvLP. 206-207",

Z-(methane sulphonemethylamido)-3,5-dichlorobenzoic acid-2,4,5-trichloranilide, M.P. 150-151",

Z-(methane sulphone-methylamido) -3,5-dichlorobenzoic acid 2 (4-c-hlorophenoxy)-5'-chloranilide, M.P'. 173-175", V

2- (methane 1 sulphone-ethylamido) -3 ,5 -dichlorobenzoic acid-3,4'-dichloranilide, M.P. 143-144",

Z-(methane sulphone-isoprojylamido) -3,5-dichloroben zoic acid-3',4-diohloranilide, M.P. 150-151",

1 Z-methane sulphonamido-3,5-dichlorobenzoic acid-2- The new compounds of the Formula I can be produced (2",4,5-trichlorophenoxy) -5'-chloranilide, M.P. 210-212", 1

Z-methane sulphonamido-3,S-dichlorobenzoic acid- 2- 2",4",6-trichlorophenoxy -4,5 '-dichloranilide, M.P. 247-249",

Z-methane sulphonamido-3,S-dichlorobenzoic acid-2'- (4"-chlorophenylmercapto) -5 '-ch1oranilide,. MP. 236-238",

Z-methane sulphonamido-4,5-dichlorobenzoic acid- 3',4'-dichloranilide, M.P. 228-230",

Zrnethane sulphonamido-4,S-dichlorobenzoic acid- 2('4',5-trichloranilide, M.P. 178-180",

Z-methane sulphonamido-4,5-diehlorobenzoic acid- 3',4,5'-trichloranilide, M.P. 271-272",

2-ethane sulphonamido-3,S-dichlorobenzoic acid-3',4'-

acid- The aforesaid Compounds are disclosed in our said copending application Ser. No. 177,976, filed on even date.

Accordingv to the first aspect of this invention it has been found that the compounds of FormulaI can be used according'to the usual methods for textile finishing. They have considerable aflinity to keratine material and are excellently'suitable, therefore, for the protection of keratine material against injurious insects, in particular for the wash and moth proof finishing of such materials both in the raw as well as in the processed state, for example of raw or processed sheeps wool as well as other animal hairs, fells and furs. In addition to the wash and moth proof finishing in the dyebath, the compounds can also be used for the impregnation of wool or Woollen articles the -materials then becoming equally excellently moth proofed. i

In addition to their insecticidal action on the larvae of Active ingredients of the formula in which R is hydrogen or a low alkyl radical, n is a number from 1 to 4, each X is a halogen atom or a CR; group, m is a number from 1 to 4 and the sum of m-l-rr is greater than 2 and advantageously at least 4, have proved particularly suitable for use in agents for the protection of keratine materials the clothes moth, the compounds of Formula I are also active againstthe larvae of the black carpet and furniture carpet beetles so that the textiles, such as Woollen blankets,

woollen'carpets, woollen underwear, woollen clothes and against attack by injurious insects should contain the active ingredients of the Formula I in a finely distributed form. Thus, solutions, suspensions and emulsions of the active ingredients should be used. i

Insofar as the active ingredients of the Formula I contain a hydrogen atom in the sulphonamide group, i.e. when R is a hydrogen atom, in the form of their alkali metal salts they have good water solubility. They can be applied to the keratine material direct from these aqueous solutions either by dipping the material for a shorter or longer time in the alkali metal salt solutions, or spraying them with the solutions, or by treating them in the solutions at a raised temperature as in dyeing processes.

Compounds having no dissociating hydrogen atom in the sulphonamide group can be drawn onto the material to be protected for example from their aqueous suspensions or emulsions, advantageously at a raised temperature, or such suspensions or emulsions can be used'for spraying the material. f

Because of their improved solubility in organic'solvents, these compounds are particularly well suited for application from non-aqueous media. Thus the materials to be protected can simply be impregnated with these solutions or, if a s uitable solvent is chosen, the moth proof finishing can be combined with a dry cleaning process. Y

Propylene glycol, methyl Cellosolve, ethyl Cellosolve and dimethyl formamide have proved to be particularly suitable organic solvents to which distributing agents and/ or other auxiliaries can be added Emulsifying agents such as.e.g. sulphonated castor oil, sulphite waste liquor and fatty alcohol sulphonates can be mentioned in particular. as distributing agents.

Thus various carriers (such as solvents) and distributing agents are suitable for the application of'theactive ingredients to the keratine material, depending on the meactive ingredient is applied. V

Furniture carpet beetle The following examples illustrate this aspect of the invention. Parts are given as parts by weight and their relationship to parts by volume is as that of grammes to cubic centimetres. Temperatures are given in degrees centigrade. 1

Example 1 0.5 part of 2-methane sulphonarnido-3,S-dichlorobenzoic acid-3,4'-dichloranilide are dissolved with the aid of 10 parts of 0.1 N-caustic soda lye and a little alcohol. This solution is diluted with 3000 parts of water and parts of wool are treated in the liquor so prepared for 15 minutes at about 60. 5 parts of 10% acetic acid are then added and the treatment is continued at 60 for a further hour.

The wool is then tested and dried in the usual way. It is resistant to attack by the larvae of the moth, and of the black carpet and furniture carpet beetles.

Example 2 Z-(methane sulphone methylamido)-3,5-dichlorobenzoic acid-3',4'-dichloranilide can be applied, for example, in the following manner:

0.5 part of active ingredient is dissolved in 10 parts of dimethyl formamide and the solution is poured into 3000 parts of water which contains about l-2 parts of an emulsifier, e.g. sulphonated castor oil.

100 parts of wool are treated for 30 minutes in this liquor at boiling temperature. After rinsing and drying, the wool is moth proof.

Naturally, other additives as well as dyestuffs can be added to the treatment baths described in Examples 1 and 2.

" Example 3 First a 20% solution of 2-(methane sulphone isopropylamido) -3,5-dichlorobenzoic acid-3',4'-dichloranilide. in glycol monomethyl ether is prepared. 10 parts by volume of this solution are diluted with 200 parts by volume of a solvent'suitable for dry cleaning, for example a suitable benzine fraction (Diluan S). If desired, other additives having a. cleansing action can be added. The woolen articles are then treated in this cleaning liquid in the usual way and then centrifuged to a solvent content of about 100% of the weight of the wool. After drying, they are moth proof.

In an analogous manner, the same or analogously composed baths can also be used for the moth proof finishing of untreated or of already otherwise treated or cleaned articles.

Also similar mixtures can be used for spraying of wool in all stages of processing.

The resistance to attack by injurious insects of the keratinous textile materials treated with the compound according to this first aspect of the invention was tested by the following standard methods.

Moths: SNV-Normenblatt No. 95901 (Anthrenus): SNV-Normenblatt No. 95902 Black'carpet beetle (Attagenus): AATCC ,Year Book .1952, p.123 andff. i

According to the second aspect of the invention, it relates to a process for the protection of keratine material from injurious insects with new compounds of the structural formula wherein R represents a member selected from the group consisting of chlorine-substituted lower alkyl radicals, chlorinated phenyl radicals and chlorinated benzyl radicals,

n is an integer from O to 3, and the total sum of substituents on the different aromatic nuclei in the molecule is at least 3 and at most 7.

The novel compound of the above Formula H have an excellent insecticidal activity in particular against in? sects in all stages of their development which injure keratine material, such as moth larvae and larvae of furniture carpet beetle (Anthrenus vorax) and black carpet beetle (Attagenus piceus).

Preferred compounds of the above Formula II are those in which Hal is chlorine. When in this formula m is 1, X is advantageously chlorine, but when more than one X is present, at least one of them can be the trifluoromethyl group. The action of the trifluoromethyl radical is equivalent to that of a halogen atom so that the one can be exchanged for the other. If the molecule contains a trifiuoromethyl radical as substituent X, advantageously other radicals X are chlorine. Very active compounds are those in which the radical Y is a hydrogen atom.

Of particular interest with regard to their easy production and good activity are the derivatives of anthranilic acid (ortho-amino'oenzoic acid) and of meta-aminobenzoic acid which are embracedby the Formula II defined above. Preferred compounds of the Formula II are in particular those in which R represents a phenyl radi- If the radical R is not hydrogen, it is advantageously a lower alkyl radical such as methyl, ethyl, isopropyl and butyl.

The new compounds of Formula H can be produced by the processes disclosed in our copending application Ser.- N o. 17 7,97 6 filed on even date.

, To merely illustrate compounds of Formula II, the following are set forth (all melting points are given in degrees centigrade) 2-(3,4-dichlorobenzene sulphonamido) 3,5 dichlorobenzoic acid-3,4"-dichloranilide, 263-264",

2-(3',4'-dichlorobenzene sulphone methylamido)-3,5-dichlorobenzoic acid-3",4" dichloranilide, M.P. 216- 217.5

2-(3',4-'-dichlorobenzene sulphonamido') -5 chlorobenzoic acid-2",4",5"-trichloranilide, Ml. 216-217 2-(3,4-dichlorobenzene sulphonamido)-benzoic acid-2",

4",5"-trichloranilide, 179-1 80, V

3- 3-trifluoromethyl-4'-chlor'obenzene sulphonamido) -4- chlorobenzoic acid-2",4",5"-trichloranilide, M.P. 191- 193,

2-(3',4'-dichlorobenzene sulphonamido)-benzoic acid-3",

4"-dichloranilide, Ml. 207-209,

2-(3,4'-dichlorohenzene sulphone methylamido),-benzoic acid-3",4adichloranilide, Ml. 144145,

2-( 3 ',4'-dichlorobenzene sulphonamido -5-chlorobenzoic acid-4-chloranilide, MP. 221-222,

2-(3,4'-dichlorobenzene sulphonamido)-5 chlorobenzoic acid-3",4-dichloranilide, MP. 221-222",

, 2-(2',4',5'-trichlorobenzene sulphonamido) 5 chlorocal substituted by one or more chlorine atoms. In addition to chlorine, this phenyl radical R can also advantageously contain at least one tritiuorornethyl group as substituent. Also para-aminobenzoic acid derivatives having a chlorinated phenyl radical R have good activity.

Thus, preferred compounds in this second aspect have the general formula in which R Hal, n Y, X and m have the meanings given above, x is a number from 1 to 3 and y is O or 1. The total sum of chlorine and trifluoromethyl substituents on the than 2 and benzoic acid-3",4"-dichlorani1ide, MP. 216-218, 2- (4'-chloro-a-toluene 'sulphonamido -3,5-dichlorobenzoic acid-3",4-dichloranilide, MP. 238240, 2-(3',4'dichl0rO-cz-t0lll6n6 sulphonamido)-3,5 dichlorobenzoic acid-3",4"-dichloranilide, MP. 224-225, Z-chloromethane sulphonamido-3,S-dichlorobenzoic acid- 3',4-dichloranilide, M.P. 261-263 2- 3'-trifiuoromethyl-4'-chlorobenzene sulphonamido) -3,

S-dichlorobenzoic acid-3",4"-dichloranilide,'Ml. 242- 243, 1 2(3',4-dichlorobenzene sulphonamido) 4,5 dichlorobe'nzoic acid-3",4"-dichloranilide, MP. 205-206", 3-chloromethane sulphonamido-4-chlorobenzoic acid 3- trifiuoromethyl-4'-chloranilide, M.P. 166-168 3-( 3',4'-dichlorobenzene suiphonamido) -4-chlorobenzoic acid-3"',4"-dichloranilide, MP; ZZZ-224, 3- 3',4'-dichlorobenzene sulphonamido) -4-chlorobenzoic acid-2",4",5"-trichloranilide, MP. 198-201, 3-(3,4'-dichlorobenzene sulphonamido)-4-chlorober1zoic acid-3"-trifiuoromethyl 4" chloranilide, M.P. 192- 3-( 34-diehlorobenzene sulphone methylamido) -4-chloro- V '3- 3 'A' -dichloro'oenzene sulphonamido) -4-ch1orobenzoic acid-2",3",4-trichloranilide,'M.P. 206-209 3-(3'-trifluoromethyl-4'-chlorobenzene sulphonamido) -4- V 3- 3'-trifiuoromethyl-4'-chlorobeniene sulphonamido) -4- chlorobenzoic acid-2"-(2",4",5'-trichlorophenoxy)- 5"-trifluoromethyl anilide, M.P. l59-161,

3- 3 ,4'-dichlorobenzene sulphonamido -4-chlorobenzoic acid-2" (4'"-chlorophenylmercapto)-5 chlorauilide,

3-( 3 '-trifiuoromethyl-4-chlorobenzene sulphonamido) -4- chlorobenzoic acid-2"-(4"'-chlorophenylmercapto)-5"- chloranilide, M.P. l58160,

3-chloromethane sulphonamidot,6-dichlorobenzoic acid- 2',4,5"-trichloranilide, M.P. 2l6-218,

3-(3,4-dichlorobenzene sulphonamido) 4,6 dichlorobenzoic acid-2",4",5"-trichloranilide, M.P. 244-246 3.-(3',4'-dichlorobenzene sulphonamido) 4,6 dichlorobenzoic acid-3"-trifluorornethyl-4"-chloranilide, M.P. 170-172",

3-(3'-trifluoromethyl-4'-chlorobenzene sulphonamido) -4,

fi-dichlorobenzoic acid-3",4"dichloranilide, M.P. 158- 3- (3 '-trifluoromethyl-4-chlorobenzene sulphonarnido) -4,

' 6-dichlorobenzoic acid-2",4",5"-trichloranilide, M.P.

3-(3'-trifluoromethyl-4'-chlorobenzene sulphonamido)-4,

6-dichlorobenzoic acid-3'f-trifluoromethyl-4-chloranilide, M.P. 172-173",

3-(3'-trifluoromethyl-4'-chlorobenzene sulphone methylamido)-4,6-dichlorobenzoic acid-2",4",5"-trichloranilide, M.P. 179-182",

3-(3-trifiuoromethyl 4' chlorobenzene sulphone ethylamido)-4,6-dichlorobenzoic acid-2",4",5"-trichloranilide,M.P. 175-177",

3-(3'-trifluoromethyl-4-chlorobenzene sulphone-n-butylamido)4,6-dichlorobenzoic acid-2",4",5"-trichloranilide, M.P. 163-165",

4 -(3'-trifluoromethyl 4 chlorobenzene sulphonamido)- benzoic acid-3"-trifluorornethyl-4"-chloranilide, M.P. 205208,

4-(3',4-dich1orobenzene sulphonamido) -bcnzoic acid-3"- trifluoromethyl-4"-chloranilide, M.P. 227-229 and 4-(3',4'-dichlorobenzene sulphonarnido)-3-chlorobenzoic acid-3-trifluoromethyl-4-"-chloranilide, M.P. 2l02l3 The foregoing compounds are set forth in our said copending application Ser. No. 177,976, filed on even date.

The compounds of FormulaII can be used according to the usual methods for textile finishing. They have considerable aflinity to keratine material and are excellently suitable, therefore, for the protection of keratine material against injurious insects, in particular for'the wash and moth proof finishing of such-materials both in the raw as well as in the processed state, for example of raw or processed sheeps wool as well as other animal hairs, feels and furs. In addition to the wash and moth proof finishing in the dyebath, the compounds can'also be used for the impregnation of wool or woolen articles, the materials then becoming equally excellently moth proofed.

In addition to their insecticidal action .on the larvae of the clothes moth, the compounds of Formula II are also active against the larvae of the black carpet-and furniture carpet beetles so that the textiles, such as woolen blankets, woolen carpets, Woolen underwear, woolen clothes and knitted goods treated with the compounds according to this second aspect by one or the other of these methods, are protected from all types of insects which are injurious to keratine material.

The agents used for the protection of keratine material against attack by injurious insects should contain the active ingredients of the Formula 11 in a finely distributed form. Thus, solutions, suspensions and emulsions of'the active ingredients should be used.

Insofar as the active ingredients contain a hydrogen atom in the sulphonamide group, i.e. when R is a hydrogen, atom, in the form of their alkali metal salts they have.

good water solubility, They can be applied to the keratine material direct from these aqueous solutions either by dipping the material for a shorter or longer time in the alkali metal salt solutions, or spraying them with the solutions, or by treating them in the solutions at a raised temperature as in dyeing processes.

Compounds having no dissociating hydrogen atom in the sulphonamide group can be drawn onto the material to be protected for example from their aqueous suspensions or emulsions, advantageously at a raised temperature, or such suspensions or emulsions can be used for spraying the material.

Because of their improved solubility in organic solvents, these compounds are particularly well suited for application from non-aqueous media. Thus the materials to be protected can simply be impregnated with these solutions or, if a suitable solvent is chosen, the moth proof finishing can be combined with a dry cleaning process.

Propylene glycol, methyl Cellosolve, ethyl Cellosolve and dirnethyl formamide have proved to be particularly suitable organic solvents to which distributing agents and/ or other auxiliaries can be added. Emulsifying agents such as e.g. sulphonated castor oil, sulphite waste liquor and fatty alcohol sulphonates can be mentioned in particular as distributing agents.

Thus various carriers (such as solvents) and distributing agents are suitable for the application of the active ingredients to the kenatine material, depending on the medium and physical state from which the finely distributed active ingredient is applied.

Active ingredients of the formula in which R is hydrogen or a low alkyl radical, n is a number from 0-3, each X is a chlorine atom or'a CF group, each of m and x is a number from 1-3 and y is 0 or 1 have proved particularly suitable for use in agents for the protection of keratine material. the sum of m+n+x+y should advantageously be at east4. V

The following examples illustrate this second aspect of the invention. Parts are given as parts by weight and their relationship to parts by volume is as that of grammes to cubic centimetres. Temperatures are given in degrees centigrade.

Example 4 0.5 part of 3-(3'-trifiuoromethyl 4'-chlorobenzene sulphonamido)-4-chlorobenzoic acid-2",4",5" trichloranilide is dissolved with the aid of 10 parts of 0.1 N-caustic soda lye and a little alcohol. This solution is diluted with 3000 parts of water and parts of wool are treated in the liquor so prepared for 15 minutes at about 60; 5 parts of 10% acetic acid are then added and the treatment is continued at 60 for another hour.

The wool is then rinsed and dried. It is resistant to attack by the'larvae of the moth and of the black carpet and furniture carpet beetles.

In the above formula.

9 Example Example 6 First a 20% solution of 3-(3,4'-dichlorobenzene sulphone methylamido)-4-chlorobenzoic acid-3"-trifluoromethyl-4"-chloranilide in glycol monomethyl ether is prepared. 10 parts by volume of this solution are diluted with 200 parts by volume of a solvent suitable for dry cleaning, for example a suitable benzine fraction (Diluan S). If desired other additives having a cleansing action can be added. The woolen articles are then treated in this cleaning liquid in the usual way and then centrifuged to a solvent content of about 100% of the weight of the wool. After drying, they are moth proof.

In an analogous manner, the same or analogously composed baths can also be used for the moth proof finishing of untreated or of already otherwise treated or cleaned articles.

Also similar mixtures can be used for spraying of wool in all stages of processing.

The resistance to attack by injurious insects of the keratinous textile materials treated with the compounds ac cording to this second aspect was tested by the following standard methods.

Moths: SNV Normenblatt No. 95901 Furniture carpet beetle (Anthrenus): SNV Normenblatt Black carpet beetle (Attagenus): AATCC Year Book 1952, p. 123 and if.

(Hal) w Xm wherein R is lower alkyl, R represents a member selected from the group consisting of hydrogen and lower alkyl, X in each occurrence represents a member selected from the group consisting of chlorine, bromine and trifluoromethyl,

m is an integer from 1 t0 4,

Y represents a member selected from the group consisting of hydrogen, methyl, lower alkoxy, chlorophenoxy and chlorophenylrnercapto,

Hal represents an atom selected from the group consisting of chlorine and bromine,

I 10 n is an integer from 1 to 3, and the total sum of m+n is at least 3 and at most 7.

'2. A process for the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing kertaine a composition containing as the essential active ingredient the compound Z-methane sulphonamido-3,S-dichlorobenzoic acid-3,4-dichloranilide.

3. A process for the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient the compound Z-methane sulphonamido-3,S-dichlorobenzoic acid-3',4',S'-trichloranilide.

4. A process for the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient the compound Z-methane sulphonamido-3,S-dichlorobenzoic acid-2,3',4',5'-tetrachloranilide.

5. A process for the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient the compound Z-(methane sulphone-N-methylamido)-3,5-diohlorobenzoic acid-3',4'-diehloranilide.

6. A process for the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient the compound 2-ethane sulphonamido-B,S-dichlorobenzoic acid-3',4-dichloranilide. V

7. A process for the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient the compound Z-methane sulphonamido-3,S-dichlorobenzoic acid-3'-trifluoromethyl-4'-chloranilide.

8. A process for the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient the compound Z-methane sulphonamido-4,S-dichlorobenzoic aci-d-3,4-dichloranilide.

9. A process for the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient the compound Z-methane sulphonamido-4,5-dichlorobenzoic acid-3',4,5'-triohloranilide.

10. A process for the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient a compound of the formula (Hal) wherein R represents a member selected from the group consisting of chlorine-substituted lower alkyl,rchlorinesubstituted phenyl and chlorine-substituted benzyl,

R represents a member selected from the group consisting of hydrogen and lower alkyl,

X in each occurrence represents a member selected from the group consisting of chlorine and trifluoromethyl,

m is an integer from 1 to 3,

Y represents a member selected from the group consisting of hydrogen, chlorine-substituted phenoxy' and chlorine-substituted phenylmercapto,

Hal represents an atom selected from the group consistin g of chlorine and bromine, n is an integer from 0 to 3,

and the total sumof substituents present on the dilferent aromatic nuclei of the molecule is at least 3 and at most 7.

11. A process for the protection of keratine material from injurious insects Whichjcomprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient the compound 3 (3' 'trifluoromethyl 4' chlorobenzene sulphonamido) 4 chlorobenzoic acid 2,4,5" trichloranilide.

12. A process for the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient the compound 3 (3 trifluoromethyl 4' chlorobenzene 1.2 sulphonamido) 4,6 dichlorobcnzoic acid 2",4",5- trichloranilide.

13. A process for, the protection of keratine material from injurious insects which comprises applying on the keratine fibres and on textiles containing keratine a composition containing as the essential active ingredient the compound 2 (3,4 dichlorobenzene sulphonamido) 4, 6-dichlorobenzoic acid-2",4",5"-trichloranilide.

References Cited in the file of this patent Chu: Jour. Am. Chem. Soc., vol. 67, pages 1862-1863 (1945).

Adams et al.: J. Am. Chem. Soc., vol. 76, pages 3584- 3586 (1954).

Mustafa: J. Am. Chem. Soc., vol. 1949, pages 384-387 (1949). 

1. A PROCESS FOR THE PROTECTION OF KERATINE MATERIAL FROM INJUROUS INSECTS WHICH COMPRISES APPLYING ON THE KERATINE FIBRES AND ON TEXTILES CONTAINING KERATINE A COMPOSITION CONTAING AS THE ESSENTIAL INGREDIENT A COMPOUND OF THE FORMULA 